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[blak-bod-ee] /ˈblækˈbɒd i/
noun, plural blackbodies. Physics.
a hypothetical body that absorbs without reflection all of the electromagnetic radiation incident on its surface.
Also called perfect radiator.
Origin of blackbody
First recorded in 1700-10 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for black body
Contemporary Examples
Historical Examples
  • The Chinamen descended upon the smooth, black body, their bare feet sliding and slipping at every step.

  • His black body, lumped and like some mad caricature of itself, gleamed in the light.

    Fantazius Mallare Ben Hecht
  • Lampblack, which may absorb between 98 to 99% of the incident radiation, is generally taken as the type of a black body.

  • And as soon as they heard it, they went to a small lodge where the black body of Iamo lay.

    Life On The Mississippi, Complete Mark Twain (Samuel Clemens)
  • That black body suddenly appeared, like a rabbit flushed out of his brush, and sped for the shelter of the wood.

    The Voodoo Gold Trail Walter Walden
  • Wherever the sunlight struck on that black body it revealed scales like those on a mangy dog.

  • The foul bird is soaring aloft, its black body and broad expanded wings outlined against the azure sky.

    The Death Shot Mayne Reid
  • Till that happens, the youngster looks as if he were stuck all over with white pins on his black body.

    The Children's Book of Birds Olive Thorne Miller
  • Close beside his black body towered Father Anselm, smoothing the folds of his gray gown.

    The Dragon of Wantley Owen Wister
British Dictionary definitions for black body

black body

(physics) a hypothetical body that would be capable of absorbing all the electromagnetic radiation falling on it Also called full radiator
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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black body in Science
A theoretically perfect absorber and emitter of every frequency of electromagnetic radiation. The radiation emitted by a blackbody is a function only of its temperature.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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black body in Culture

blackbody definition

An object that can absorb and send off radiation with complete efficiency — that is, it reflects (see reflection) none of the radiation that falls on it. The higher the object's temperature, the higher the frequency of the radiation it gives off.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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